@article{COCV_2001__6__275_0, author = {Lagnese, John E.}, title = {A singular perturbation problem in exact controllability of the {Maxwell} system}, journal = {ESAIM: Control, Optimisation and Calculus of Variations}, pages = {275--289}, year = {2001}, publisher = {EDP Sciences}, volume = {6}, mrnumber = {1824104}, zbl = {1030.93025}, language = {en}, url = {https://www.numdam.org/item/COCV_2001__6__275_0/} }